ZIP Code 53518 — Blue River, WI
53518 is a standard (street delivery) ZIP code serving Blue River, Wisconsin, in Richland County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 53518 at a glance
| ZIP code | 53518 |
|---|---|
| Primary city | Blue River |
| State | Wisconsin (WI) |
| County | Richland FIPS 55103 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,489 |
| Coordinates | 43.245800, -90.591080 |
How ZIP+4 works in 53518
The four digits after the hyphen encode a delivery segment inside 53518. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 53518 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 53518.
| ZIP | City | Distance |
|---|---|---|
| 53573 | Muscoda, WI | 7.8 mi |
| 53805 | Boscobel, WI | 8.5 mi |
| 54631 | Gays Mills, WI | 12.5 mi |
| 53581 | Richland Center, WI | 12.5 mi |
| 54655 | Soldiers Grove, WI | 12.6 mi |
| 53540 | Gotham, WI | 15 mi |
| 53584 | Sextonville, WI | 15.1 mi |
| 54657 | Steuben, WI | 16.3 mi |
| 53506 | Avoca, WI | 16.8 mi |
| 54652 | Readstown, WI | 17.3 mi |
| 53543 | Highland, WI | 17.4 mi |
| 53556 | Lone Rock, WI | 17.4 mi |
Questions about 53518
What is the ZIP+4 code for 53518?
53518 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 53518, you need to look up a specific street address to get them.
What city is 53518?
53518 is assigned to Blue River, Wisconsin, in Richland County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.